Cloth-cutting device



' Sept. 7 1926.

J. T, TULLIS CLOTH CUTTING DEVICE Filed Nov. 12, 1923 JOHN TULL/J.

//v VfN TOR W A rrokN Y5 Patented Sept. 7, 1926.

-.1oni-fi u:fii5-r.Is,-or' m, ARKANSASQ A$SIGN6RTOCHARLEs'ABEB, 0F Here v ARKANSAS.

exam-demise My inveii'tiofli'el'aites to the of cloth "chi-ate, fiinctiohin'g; as ie'qiiiie'din business "m west Of my invention is to provide 1 urisatismetom If the knife becomes duIl' embed; andif we can it ma Y refugees ere-1y, wmhctien; 7, w 1 e Foii this reason I hive I adopted theshear cutting iiiethod' and ha e incorporated it in i'e steady and sure closing "of the mowers-en 1 iqu'ic1 1y 'snhppingbpen tliej aws in ieadinessf for the succeeding cut.) I have also pfrovided mechanism whereby "the 9113;; is memes sum-whey fat-"in advanceof the hirerum paint of the] shears" to enable' the 'shetirs to bOjDiil and ready toc'ut againh ethe cutting device, the cutting jaws reach j Another object of my inventi n is to piosi1ed*"Se15tembei--4m 1917 and also my Patent No. 1345811, issued July 6th 1920,'but

it is equally efficient and adapted for cutting irrespective of cloth measuring machines.

I desire to be protected in the construcp'eningf and "closing "diiriiigv of thecutting}device;;pe1' Se, end for thittieason' I liafveilius'trated, and W111 clein the" damvings heiein is simply a pie sciiib'e,tii iiefenedform of construction. It w L-obvmusi bef iiidei stood the disclosure shows a" cross sectional-"view of my dexic fitted toia cloth handling machine; '7 Fig; 2 showszinelevation vi'e'W of the same,

21' portion ofthe' cloth handIingfm'achine being brokenway to disclose theciitting device;

and paWhh'echanism.

. Refei'rri' g' to the-accompanymg drawings the reference" numeral 10 is used, generally,

soas t'o permit longitiidinal movement therein, HTCEEIIIIQI 14, provided with a tram of gears; 15* tin-c116, designed'to operate by en- 7 g'agemeiit'of one of th'e'geafs (15) with a rack 17, secured thetia'ck. The'consthiction is such that the flanges 12 and 13, enghgjing the Lippersurface of thec'ajrrie'r 14,

hold the ear 15' alwa s in men with the reck 17 3 V The lower blade 18 of theshezu' jaw; 1s

permanent-1y fizl'ed, and immovable, in its 1e lame to the carrier, andis' so mounted that 3 sl'i-ows aii enlarged detail view of my cutt ng device; and e Flg. 4- snoWs a! detail view of: the ratchet it nndeiiies"the'loth to be cut. The u per.

blade 19 is fiilciumed with the lower blade viesq; with a slot The email gear wheel 7 v xfz'iled in the 'carii'er; this geek, as before stated, also being in mesh with, and riding vupon, the rack 17. By this construction it ratchet wheel. 23.

the gears. To the gear 16 is rigidly secured a ratchet wheel 23, and its pawl 24; is secured to the end of a lever 25, loosely fulcrumed, preferably, to the central point of the ratchet wheel, the other end of said lever 25 termi nating in an arm 26, which rides in the slot 22. Preferably, a light spring 27 is secured to the extending end of the pawl 24:, this ten ding to hold the pawl in engagement with a ratchet notch in the ratchet wheel, and these notches are so formed that the forward movement of the carrier, rotating the gear 16 and the ratchet wheel, will hold the lever 25 in engagement with the ratchet wheel,

thereby rotating the lever with the ratchet wheel, and this in turn (by the engagement of the arm 26 with the lever 21 through the medium of the slot 22) rotating the arnn Thisaction causes the upper cutting blade of the shears to be operated.

In the rearward movement of the car rier the pawl 2% simply clicks over the ratchet notches, and the lever 21 remains rest, thus permitting the upper cutting blade of the shears to also remain at rest.

My construction of the parts of the mecnanism is such that the cutting distance of the shear jaws is greater than the circumferential distance of the small gear 16, and this functions to produce a long cut in the cloth and snap the upper cutting jaw open again and start it on its downward cutting movement before the cutting jaw has come into contact with the uncut cloth.

The working parts of my cutting device are enclosed in a housing which is desig nated by the numeral 14-, which numeral 1 have also used as a general indication of the carrier, and the numeral 28 indicates a handle attached to the carrier.

In practical operation to cut a cloth the operator grasps the handle 28 and, the carrier being at its rearward limit of movement, or at a point to the rear of the cloth overlying the lower jaw of the shears, moves the carrier forward in the track. The gear 15, meshing with the rack 17 rotates, thus rotating the gear 16 and the As by a forward movement of the carrier the pawl 2% is in operative engagement with a notch of the ratchet wheel, the lever 25 will be rotated around its pivotal point (designated by the numeral 29) thus carrying the lever 21 upward and downward (through the medium of the arm, or stud, 26 riding in the slot 22) and this opens and closes the cutting jaw 19 from its fulcrum 20. As before stated,- as the circumferential length of the gear 16 is less than the cutting length of the shear jaws, a cut in the cloth will be made and the upper cutting jaw snapped open and started on its return downwardcutting movement before the point of contact of the cutting edges of the upper and lower shear jaws has reached the uncut fabric.

Having thus described my invention what. I claim and desire to secure by Letters Patent of the United States, is:

1. A cloth cutting device comprising a carrier mounted, :for longitudinal movement, in a track; a pair of shear blades, the bottom blade being secured stationary in the carrier and designed to underlie the cloth to be cut; means whereby the fori are movement of the carrier will cause the upper blade to open and close, from its fulcrum point, and the rear movement/of the carrier will permit the'upper blade to remain in stationary suspended position.

A cloth cutting device comprising a tr. or; a carrier mounted for longitudinal movement therein; a rack in said track; a

nir of cutting shear blades mounted in said carrier, the lower blade being stationary and the upper blade being fulcrumed thereto; a gear in the carrier to mesh with said rack; a second gear meshing with said first gear; a ratchet on said second gear and a pawl to engage the notches therein; a

lever fnlcrumed to the central point of said second gear; an arm on said lever designed to engageand ride in a slot in the extended end of the upper cutting jaw of the shears, substantially as shown and described.

A cloth cutting device comprising a track, a rack in said track; a carrier to move insaid track; a gear journaled in the carrier and meshing with the rack; a pair of cutting blades mounted in said carrier the lower blade being stationary; means whereby the forward movement of the carrier will open and close the upper cutting blade of the shears, and the rearward movement of the carrier will permit the upper blade to remain in the stationary suspended position. 7

A cloth cutting device comprising a track; a rack in said track; a carrier to move in said track; a pair of cutting shear blades in said carrier the lower blade being stationary; a lever, with a slot therein, ex tending from the fulcrum point of the upper cutting blade of the shears and being rigidly connected therewith; a gear in said carrier to meshwith the rack in the track; a second-gear in said carrier in mesh with the first gear; a lever on said second gear and an arm thereon to extend into, and ride within the slot in the aforesaid lever, substantially as shown and described.

JOHN, T. TULLIS. 

